Jubilee line drivers are to strike for two days next month in a row over new timetables.

The Rail, Maritime and Transport (RMT) union said its members will walk out on Wednesday, June 6 and Thursday, June 14, claiming the new timetables “ride roughshod” over rostering agreements.

General secretary Mick Cash said: “It is outrageous that Tube managers are trying to bulldoze through timetable changes without agreement that ride roughshod over existing rostering agreements.

“Drivers are angry at the impact on work-life balance and rightly see this move as the thin end of a very long wedge that could see processes and agreements unilaterally shredded by Tube bosses.

“There’s time for Tube management to reverse the imposition of these changes and to start talking seriously with the unions rather than wading in with the big stick.”

Nigel Holness, London Underground’s director of network operations, said: “The new Jubilee line timetable will benefit thousands of passengers every day as we extend the most frequent, peak-time service from 30 minutes to two hours.

“We have agreements with our trade unions on the amount of weekend working we ask our drivers to do, and implementing this timetable keeps us well within those agreements.

“We encourage RMT to continue working with us in order to deliver these huge benefits to customers rather than calling for unnecessary industrial action.”

Members of the train drivers’ union Aslef will also be striking on the same days on the Jubilee Line in the same dispute.

Aslef official Finn Brennan said new rosters increased the number of Saturday shifts drivers are required to work, adding that it broke a commitment made as part of the 2015/16 pay agreement to maintain the same percentage of weekend rest days as the service expands.

“It is clear that London Underground management hoped that members would not be prepared to take action, giving them a green light to ignore agreements in the future, but drivers saw through the management propaganda and have shown they prepared to stand up to protect agreements.

“Despite the rhetoric from City Hall about wanting to work with trade unions to avoid conflict, senior management at LU have ignored every offer to sit down and discuss this issue with us over the last months. The responsibility for the disruption these strike will cause rests squarely with them,” he said.

Aslef members on parts of the District Line will strike on the same dates in a separate dispute.